Given the following classes (NodeNew and LinkedList), write the implementations for the

functions in the LinkedList Class (without changing the class definition) in C++. Then test it out.

class DNodeNew {

public:

int element;

DNodeNew* next;

DNodeNew* prev;

};

class LinkedList{

public:

double averageOfaboveTen(); // Calculate the average of all the elements whose values are above

ten.

void addFront(); // add the front node

void insert(int n, int e); // insert new node at nth position

DNodeNew* head;

}